IMPORTANT RULING: We have submitted the AimChart to the R&A for an official ruling, and they have stated that the use of the chart would be legal PROVIDING that it is not used as a physical gauge for angle. This means that using the chart at the midpoint to reference ball angle would be a breach of Rule 14-3. Therefore we need to instruct players not to lookup angles until they have walked away from the midpoint until this is totally clarified. A warning message will also be printed on new charts. More info to come.